/*!
 * Copyright 2010 - 2017 Hitachi Vantara.  All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package org.pentaho.di.repository.pur;

import java.lang.ref.SoftReference;

import org.pentaho.di.repository.RepositoryDirectoryInterface;

public class RootRef {
  private SoftReference<RepositoryDirectoryInterface> rootRef = null;

  public synchronized void setRef( RepositoryDirectoryInterface ref ) {
    rootRef = new SoftReference<RepositoryDirectoryInterface>( ref );
  }

  public synchronized RepositoryDirectoryInterface getRef() {
    return rootRef == null ? null : rootRef.get();
  }

  public synchronized void clearRef() {
    rootRef = null;
  }
}
